Therabeads King Size Microwave Moist Heat Pack
The Therabeads King Size Microwave Moist Heat Pack is designed to capture humidity from the surrounding air in the beads contained in the pack and then release that moisture when the pack is heated in the microwave.
The King Size Moist Heat Pack measures 12" by 16" so it is large enough to cover the low back or other larger areas of the body.